And not only this: the children should be taught to observe the position of the sun in the heavens from hour to hour, and by his position, to tell the time of day. Of course they will want to know why the sun is such an indefatigable traveler, and thereby hangs a wonderful tale, which they may as well learn in the ‘age of faith,’ of the relative sizes of sun and earth, and of the nature and movements of the latter.